1 definition by Mz.Pooh.Babii
A big ginormous boy with man titis.Also a person who refers to them self as chubby, big bone, fluffy.With a funny name usually named after a charicter off south park
person 1:hey i want some of that pizza
person 2:No fat boy
person 1:im not fat im just big bones
person 2:No ur a fat ass now sit down n shut the fuck up
person 1:Fine i wanted donuts anyway
person 2:No fat boy
person 1:im not fat im just big bones
person 2:No ur a fat ass now sit down n shut the fuck up
person 1:Fine i wanted donuts anyway
by Mz.Pooh.Babii October 20, 2007